Phoebeannaia mossae, Caron & Venkataraman & Tietjen & Fls, 2023

Phoebeannaia mossae

Specimen P10419a & b includes several disarticulated dermal bones spread across the plane of the break in the nodule ( Fig. 4). Ornamentation of all dermal bones consists of fine, close-packed, sinuous ridges. Of the skull table, left and right frontals and parietals can be easily identified. The suture between the frontal and parietal is W-shaped with the deep anterior projection of the parietal enclosing the passage of the supraorbital sensory canal (spo.sc; Fig. 5A). The canal itself bears a distinct medial kink on the frontal, mirroring the concave lateral edge of the bone. The parietal pit lines are unknown due to poor a distinctively large subrectangular quadratojugal. Of the mandible, clearly preserved bones include the dentary, angular, articular and coronoids ( Fig. 4). The presence or absence of the surangular is unknown. Several branchiostegal rays are preserved ( Fig. 4, reconstruction Fig. 5C), although scattered in such a way it is impossible to count them. The articular is well ossified and bears a double glenoid facet for articulation with the quadrate. The suture between the angular and dentary is visible on the right mandible ( Fig. 4B, D), and a line of coronoids is visible on both mandibles. Fragments of the shoulder girdle are also evident, but detailed reconstruction is difficult due to compaction, breakage and dissociation of the individual bones.